Key-duplicating machine



N v 1966 J. smmz 3,286,597

KEY-DUPLICATING MACHINE Filed June 5. 1965 5 Sheets-Sheec 1 arW/W Nov. 22, 1966 J. SCHWARTZ 3,286,597

KEY-DUPLICATING MACHINE Filed June 3, 1965 5 Sheets-Sheet 2 Nov. 22, 1966 Filed June 5. 1965 J SCHWARTZ KEY-DUFLICATING MACHINE 5 Sheecs-Sheet 5 //VVENO. J ERME SCHWAETZ United States Patent O 3,286,597 KEY-DUILICATING MACHINE Jerome Schwartz, Taylor Lock Company, 2034 W. Lippncott St., Philadelpha, Pa. Filer! June 3, 1965, Ser. No. 461,136

- 13 Claims. (Cl. 9013.05)

This invention relates generally to apparatus for duplicating keys and the like.

It is an important object of the present invention to provide a keyduplicating machine which is capable of duplicating a wide range of keys, both cylinder and fiat, which is extremely simple to operate, requiring a minimum of training and skill.

It is a further object of the present invention t provide a key-duplicating machine of the type described which is compact to occupy a minimum of space, relatively light in weight, neat and attractive in appearance, durable and reliable throughout a long useful life, and which can be economically manufactured for sale at a reasonable price.

Other objects of the present invention will become apparent upon reading the following specification and referring to the accompanying drawings, which form a material part of this disclosure.

The invention accordingly consists in the features of construction, combinations of elements, and arrangements of parts, Which will be exemplified in the construction hercinafter described, and of Which the scope will be indicated by the appended claims.

In the drawings:

FIGURE 1 is a side elevational view showing a keyduplicating machine of the present invention, and illustrating the vise carriage swung out of operative position;

FIGURE 2 is a front elevational view of the machine of FIGURE 1;

FIGURE 3 is a partial sectional view taken generally along the line 33 of FIGURE 2;

FIGURE 4 is a partial sectional view taken generally along the line 44 of FIGURE 2;

FIGURE 5 is an end elevational view similar to FIG- URE 1, but illustrating the carriage swung upward to an operative position of use;

FIGURE 6 is a partial sectional view taken generally along the line 66 of FIGURE 5;

FIGURE 7 is a partial sectional elevational view taken generally along the line 77 of FIGURE 6;

FIGURE 8 is a partial sectional elevational view taken generally along the line 88 of FIGURE 7;

FIGURE 9 is a sectional elevational view taken gen erally along the line 99 of FIGURE 8; and

FIGURE 10 is a partial elevational view similar to FIGURE 7, greatly enlarged, illustrating the operation of a vise.

Referring now more particularly to the drawings, and specifically to FIGURES 1 and 2 thereof, a keyduplicating machine is there generally designated 20 and includes a frame, generally designated 21. The frame may be defined by a generally upstanding back wall 22 inclined forwardly and upwardly, and a pair of generally upright end walls 23 and 24 extending generally forwardly from opposite ends of the back wall. A top wall 25 may extend from the upper end of the back wall 22 forwardly over the space -between the end walls 23 and 24. The top wall may be curved and downwardly concave t0 define a hood or guard. Advantageously, the back wall 22, end walls 23 and 24, and top wall 25 may be integrally formed of a single sheet of metal, or other suitable material, eut and bent to the desired configuration. EX- tending from the bottom of each end wall 23 and 24 may be one or more mounting members or feet, as at 26 extending from the end wall 23, and 27 extndifig from ice the end wall 24. If desired, the feet 26 and 27 may be secured to a mounting surface, bench or table top.

The frame 21 thus provides a chassis or housing having an open front. Extending longitudinally across the front of the chassis or frame 21, between lower forward regions of the end walls 23 and 24, is a tie member or rod 30 having its opposite ends secured to respective end walls 23 and 24, as by fasteners 31 and 32. The tie member or rod 30 efiectively reinforces and rigidifies the frame or chassis 21, and further provides way means, as will appear more fully hereinafter.

Carried externally by the chassis end wall 24, and fixedly secured thereto by any suitable means, is a drive or motor 34. Extending from the motor 34 horizontally through the chassis end wall 24 and interiorly into the chassis 21 is a drive shaft 35 which extends toward and terminates in spaced relation from the opposite chassis end wall 23. The motor shaft 35 may be provided with a collar 36 and a clamping nut 37 for detachably securing a cutting tool 38 in fixed, circumposed relation about the motor shaft. The cutting tool 38 may be of generally circular-outline configuration and provided about its periphery With cutting ridges, teeth or the like. The peripheral cutting surface of tool 38 may be generally frusteconical, as seen in FIGURE 2.

A disclike guide member or plate 40 is adjustably secured in facing engagement with the interior of chassis end wall 23, having its peripheral edge extending forwardly beyond the chassis end wall. More particularly, the guide member or plate 40 is provided with a generally circular peripheral segment 41, which may extend approximately degrees about the guide member, the remainder of the periphery being generally circular, as at 42, and of lesser radius. The guide member 40 is secured in facing relation With the chassis end wall 23 by a pivot pin 43 extending slightly eccentrically through the guide member relative to its peripheral edge portion 41, and extending through the end wall 23 in substantial alignment with the axis of shaft 35. Coneentrically With the pin 43, the guide member 40 is formed with an arcuate slot 44; and, a releasable fastener 45 extends through the slot 44 and the chassis end wall 23. Upon release or loosening of the fastener 45 the guide member 40 is rotatable about the axis of pin 43 within the limits of slot 44, approximately 180 degrees. The guide member 40 may be fixed at any sele-cted position of its rotative moveaxis. The forward and rearward extremes of this shiffing movement are shown in dot-and-dash outline, and in dashed outline in FIGURE 3. Desirably, the peripheral edge portion 41 of guide member 40 may have a crosssectional configuration similar to that of cutting tool 38, say the frustum of a cone, as best seen in FIGURE 6.

Mounted on the fixed rod or shaft 30 is a carriage, generally designated 50. The carriage 50 may advantageously be fabricated of an integral sheet and includes a body part 51 having a pair of apertured ears 52 and 53 turned generally normal to the body part and in parallelism With each other. The apertnred ears 52 and 53 have inserted therein replaceable bushings 54 and 55 Which slidably and rotatably receive the tie member, rod or shaft 30. In this manner, the rod or shaft 30 defines way means supporting the carriage 50 for movement in opposite direc- 3 longitudinally of the shaft 30 in the direction away from the motor 34. This construction may best be seen in FIGURE 4. It will there be observed that the outer body portion 57 and extension 53 are. respectively provided with aligned, thru slots 59 and 60 each having a central enlargement or hole, as at 61 and 62.

Mounted on the carriage 50, and specifically on the outer carriage-body portion 57 and extension 58 are a pair of vises, respectively generally designated 65 and 66. The vises 65 and 66 may be substantially identical, so that a detailed description of one will sufice. The vise 66 is best seen in FIGURES 79, and includes a pair of substantially identical lower and upper members 67 and 68. The lower member 67 is of generally rectangu lar outline configuration having a generally fiat undersurface 69, generally parallel inner and outer surfaces 70 and 71 substantially normal to the undersurface, and generally parallel end surfaces 72 and 73 substantially normal to both the undersuriace and the inner and outer surfaces. The outer-side surface may be ehamfered, as at 74, at its intersection with the undersurface 69, if desired,

On the underside of the lower member 67, longitudinally coextensive therewith, is formed a rib 75 depending from the undersurface 69 and spaced between the inner and outer surfaces 70 and 71. The rib 75 is of a width and leng-th to conformably engage in the slot 60 of carriage extension 58, as seen in FIGURE 4. Further, the undersurface of the rib 75 is oblique, as at 76, declining generally in the direction between outer surface 71 and inner surface 70, as seen in FIGURE 7.

The upper surface of lower member 67 is generally fiat, as at 78, substantially parallel to the undersurface 69; and, there is provided an upstanding rib 79 on the upper surface longitudinally coextensive therewith between the end surfaces 72 and 73. The rib or upstanding projection 79 is located adjacent to and extends along the inner-side surface 70, being spaced from the latter by an upwardly facing gripping surface 80. Adjacent to the rear side 71, the upper surface 78 is provided with a raised land 81 longitudinally coextensive with the rear side. The land 81 is formed with an upwardly facing groove 82 extending longitudinally along and spaced inward from the outer side 71 and having its opposite ends opening through respective end surfaces 72 and 73. The specific configuration of groove 82 is best seen in FIGURE 10. It will there be apparent that the -groove includes a pair of generally parallel, spaced, facing side walls 83 and 84 extending longitudinally of the groove. For purposes of terminology, the groove side wall 83 will be called the inner wall, being closest to the inner surface 67, and the groove side wall 84 will be called the outer wall, being closest to the groove outer surface 71. A groove bottom wall 85 extends longitudinally along the groove and declines from the inner wall 83 to the outer wall 84, being smoothly joined to the inner and outer walls, as by fillets 86 and 87.

Extending centrally through the lower member 67, spaced between opposite ends thereof 72 and 73, and spaced between the rib or projection 79 and the land 81, there is provided an internally threaded thru hole 90. In assembly, with the rib 75 engaged in the slot 60, the hole 90 is aligned with the hole 62.

The upper member 68 is substantially identical to the lower member 67, but inverted in the assembled relation. The upper member 68 includes an upper generally fiat surface 91, inner and outer surfaces 92 and 93 generally parallel to each other and depending substantially normal to the upper surface 91, The intersection of upper surface 91 and inner surface 92 may be beveled or chamfered, as at 94. Depending generally normally from opposite ends of the upper surface 91 are a pair of generally parallel end surfaces 95 and 96. Provided on the upper surface 91 is a rib 97 extending longitudinally between opposite end surfaces 95 and 96 and having its upper surface 98 declining inwardly toward the inner surface 92.

The undersurface of upper member 68 is generally fiat,

as at 99, substantially parallel to the upper surface 91, and provided along its outer edge with a longitudinally extending, depending projection or rib 100. The rib 100 extends between opposite end surfaces and 96 along outer surface 93, being spaced from the latter by a surface 101 corresponding to the surface 80 of the lower member. The rib may be of the sarne cross-sectional configuration as the rib 79 of the lower member, each having a rounded extremity or nose.

Adjacent to the inner surface 92, the undersurface 99 is provided with a nether land 102 extending longitudinally between opposite end surfaces 95 and 96 and formed with a longitudinally extending groove 103. The groove 103 may have its opposite ends opening through opposite end surfaces 95 and 96 and may be of a cross-sectional configuration identical to that of groove 82, but inverted.

Centrally of the upper member 68 may be a thru bore or hole 105 opening through the upper surface 91 and lower surface 99.

The thru hole 105 may have its lower portion enlarged, as by a counterbore 106, see FIGURE 9. The bore 105 and counterbore 106 are located in spaced relation between opposite end surfaces 95 and 96, and also between land 102 and rib 100.

It will now be appreciated that the external configurations of the lower and upper members 67 and 68 of the vise 66 may be substantially identical, except for the thru holes 90 and 105, 106. Indeed, upper and lower members 67 and 68 may be produced from identical molded blanks, or from the same extrusion, if desired.

The vise 66 further includes a bolt or threaded stud 108 engaged in threaded relation in fiole 90 of lower member 67 and projecting freely downwardly through hole 62 of carriage extension 58. On the lower end of stud 108 may be provided a nut 109 in threaded engagement therewith and in facing engagement With the undersurface of the carriage extension. By this means, the lower vise member 67 is firmly secured fast to the carriage, in proper location relative thereto, but may be detached therefrom if desired. The bolt or stud 108 extends upwardly, spacedly through the counterbore 106, and bore 105, and projects upwardly therebeyond. Resilient means, such as a coil compression spring 110 is circumposed about the bolt 108 Wiifihill the eounterbore 106. The spring 110 has its lower and upper ends respectively engaging the upper surface 78 and lower member 67, and the downwardly facing end surface of the counterbore to urge the upper member 68 upwardly. Threadedly engaged on the upper end of threaded bolt 108 is a clamping member, such as a wing nut 111. Washer means 112 may advantageously be circumposed about the bolt 108, between the underside of the wing nut 111 and upper surface 98 of rib 97.

In the assembled condition of FIGURES 79, the ribs or projections 79 and 100 are respectively received in the grooves or recesses 103 and 82. The condition shown in FIGURES 79 is that of clamping, wherein the vise 66 is clamping a key 115. Upon release from the clamping position, as by rotation of the nut 111 to move the same upward on bolt 108, the spring 110 urges the upper member 68 upward, the rib surface 98 bearing against the undersurfa of washer 112. By the inclination of the rib surface 98, the acute corner thereof acts as a fulcrum and effects swinging of the upper vise member 68 in the clocPwise direction, as seen in FIGURES 7 and 9, for quick release of the key 115.

Upon retightening of the vice 66, say to clamp a key 115 in the position illustrated, the key is placed on the surface 80 of lower member 67 in edge abutment with the projection or rib 79. The wing nut 111 is screwed down or tightened. This causes the rounded nose of rib 100 to engage the inclined lower surface 85 of groove 82, the phantom position illustrated in FIGURE 10. Upon further tightening of the nut 111, the rib 100 rides downward and outward along the inclined surface 85 as the upper vise member 68 swings counterclockwise. During this clamping action the outer side or surface of rib 100 simultaneously pivots about and rides on the upper edge or corner of groove side wall 84, sec FIGURE 10. By this action, the key 15 is engaged on its upper surface by the undersurface of land 102, and the key is simultaneously drawn o1itward against the rib 79 and clamped downward against the surface 80. This assures firm and accurate location of the key in the vise 66.

As noted hereihbefore, th vise 66 is located generally in the plane of guide member 40, While the vise 65 is located generally in the plane of cutting tool 38. The construction of the vise 65 may be identical to that described hcreir1berforein connection With the vise 66- for releasably clamping a key blank 116, as seen in FIGURE 6.

With the key 115 to be duplicated damped in vise 66, and the key blank 116 clamped in vise 65, it is only necessary -to swing the carriage 50 upward to engage the key 115 With the peripheral edge 41 of guide member 40 while moving the carriage longitudinally along the way means 30. The rotation of cutting tool 38 then serves to cut the desired contour in the key blank 116. Upon Wearing of the cutting tool 68, or replacement thereof With a dierent-diameter cutting tool, the guide member 40 may be adjusted, as described hereinbefore, for proper cutting action of the tool upon a key blank.

While the chasSis 21 has been illustrated as provided With feet 26 and 27 for securement t0 a suitable support, the relationship of weight distribution, especially as the external force applied to eifect cutting is proximate to the major weight of motor 34, it has been found that the instant keyduplicating machine may be conveniently operated without securement to a support.

From the foregoing, it is seen that the present invention provides a key-duplicating machine Wh-ich fully accomplishes its intended objects and is Well adapted to meet practical conditions of manufacture, maintenance and use.

Although the present invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, it is understood that certain changes and modifications may be made within the spirit of the invention and scope of the appended claims.

What is claimed is:

1. In a key-duplicating machine; the combination comprising a frame having an open front, a shaft carried by said frame interiorly thereof and mounted for rotation about a generally horizontal axis, a cutting tool in said frame and carried by said shaft for rotation therewith, way means on said frame extending longitudinally of and spaced from said shaft axis, a carriage mounted on said way means for movement longitudinally therealong and swinging movement toward and away from said shaft axis, a guide mounted in said frame spaced longitudinally thereof from said tool, and clamp means carried by said carriage for releasably clamping a cut key adjacent to said guide and a key blank adjacent to said tool, said clamp means being swingable and slidable With said carriage to move a cut key along said guide and a key blank along said tool to be cut by the latter, said frame comprising an integral sheet of stiff bendable material cut and bent to define an upstanding rear wall, end walls integral With said rear wall extending forwardly from opposite ends -of said rear wall t0 vertically rigidify the latter, and a hood integral With said rear wall extending forwardly from said rear wall and arcuately over the space between said end walls to horizontally rigidify said rear wall, said way means extending between the forward ends of said end walls to rigidify said end walls, said carriage comprising an integral sheet of stiff bendable material cut and bent to define a generally fiat body part extending transversely from said way means, said body part being provided With a bend extending generally parallel to said way means for longitudinally rigidifying said body part, and a pair of ears integrally depending from opposite ends of said body part slidably and rotatably engaging said way means to mount said body part for sliding and rotative movement relative to said way means, said clamp means comprising a pair of substanti-ally identical vises mounted on said body part respectively located for swinging movement toward and away from said guide and tool, said vises each comprising a lower member on and in interfitting engagement With said body part, an upper member on said lower member, resilient means urging said members apart, and tie means for forcibly moving said members toward each other, said upper and lower members having meeting surfaces, at least'one of said surfaces being oblique to the direction of member movement toward and away from each other to simultaneously move said upper member toward said lower member and away from said shaft axis, to thereby draw a clamped article away from said axis, said lower and upper members each being formed With at least a single protrusion and a single recess for receiving the protrusion of the adjacent member, said recesses and protrusions being formed With said meeting surfaces.

2. In a key-duplicating machine, the combination comprising a frame having an open front, a shaft carried by said trame and mounted for rotation about a generally horizontal axis, a cutting tool carried by said shaft for rotation therewith, way means on said frame extending longitudinally -of and spaced from said shaft axis, a carria ge mounted on said way means for movement longitudinallv therealong and swinging movement toward and away from said shaft axis, a guide on said frame spaced longitudinally thereof from said tool, and clamp means carried by said carriage for releasably clamping a cut key adjacent to said guide and a key blank adjacent to said tool, said clamp means being swingable and slidable With said carriage to move a cut key along said guide and a key blank along said tool to be cut by the latter, said carriage comprising a body plate extending transversely from said way means, and bearing ears on said body plate rotatably and slidably receiving said way means, said clamp means comprising a pair of subStantially identical vises mounted on said body plate respectively located for swinging movement toward and away from said guide and tool, s'aid vises each comprising a lower member on and in interfitting engagement With said body plate, and an upper member on said lower member, resilient means urging said members apart, and tie means for forcibly moving said members toward each other, said upper member having an upper surface oblique to the direction of member movement toward each other and engageable With said tie means to eifect swinging movement of said upper member toward and away from said lower member.

3. A vise construction comprising a pair of facing Vise members each having a thru hole in alignment With the thru hole of the other, tie means extending through said holes, resilient means urging said members apart, and interfitting formations on the facing sides of said members including a first surface on one member oblique to the direction of member movement toward each other, a second surface on the other member engageable With said first surface to displace said members transversely upon movement toward each other and an abutment on the nonfacing side of one member offset from the direction of urgence of said resilient means and engageable With said tie means to elfect swinging movement of said one member toward and away from the other member.

4. A vise construction according to claim 3, said tie means comprising a bolt having enlargements on opposite sides of said member-s, said abutment being engageable With one of said enlargements.

5. A Vise construction comprising a pair of facing vise members each having a thru hole in alignment With the thru hole of the other, tie means extending through said holes, resilient means urging said members apart, and interfitting formations on the facing sides of said members including a first surface on one member oblique to the direction of member movement toward each other, and a second surface on the other member engageable with said first surface to displace said members transversely upon movement toward each other, said formations comprising at least a single protrusion on the facing side of each member, and said members each being formed with a recess for receiving the protrusion of the other member, said recesses and protrusions being formed with said first and second surfaces.

6. A vise construction according to claim 5, at least one of said protrusions providing an abutment for an article seated on the facing side of a body carrying the protrusion, said first surfaces each being oblique to displace the facing side of the other body in the direction to draw said article against said abutment.

7. A vice construction according to claim 6, the protrusion and recess of each member being on opposite sides of its hole.

8. A vice construction according to claim 7, the nonfacing side of at least one member having an oblique surface for engagement with an enlargement of the tie means to swing said one member relative to the other member.

9. A vise construction according to claim 5, in combination with an abutment on the nonfacing side of at least one member offset from the direction of urgence of said resilient means and engageable with said tie means to effect swinging movement of said one member toward and away from the other member.

10. A key-duplicating machine comprising an integral metal sheet cut and bent to provide an upstanding rear wall, a pair of end walls extending forwardly from opposite ends of said rear wall, support feet extending outwardly from the lower ends of said end walls, and a guard cover extending from the upper edge of said rear wall arcuately over and bridging the space between said end walls; a tie member extending rigidly between and connecting the lower forward regions of said end walls; a drive motor having one end fixed to the exterior of one end wall; a rotary drive shaft extending from said motor inwardly through said one end wall generally parallel to said tie member; a cutting tool carried by said shaft for rotation therewith; a disclike guide eccentrically mounted on the other end of said end wall for selective rotative adjustment; a carriage carried by said tie member for movement longitudinally therealong and rotatively thereabout toward and away from said cutting tool and guide; and a pair of clamps carried by said carriage for releasably clamping a cut key adjacent to said guide and a key blank adjacent to said tool; whereby said clamps are swingable and slidable with said carriage to move a cut key along said guide and a key blank along said tool to be cut by the latter.

11. A key-duplicating machine according to claim 10, said carriage comprising an integral sheet of stiif bendable metal cut and bent to define a generally flat body part extending transversely from said tie member, said body part being provided with a bend extending generally parallel to said tie member for longitudinally rigidifying said body part, and a pair of ears integrally depending from opposite ends of said body part slidably and rotatably engaging said tie member to rn0unt said body part for sliding and rotative movement relative to said tie member.

12. A key-duplicating machine according to claim 10, said guide having an edge cross section similar to that of said cutting tool.

13. A key-duplicating machine according to claim 10, said clamps each comprising a lower member on and in interfitting engagement with said carriage, an upper member on said lower member, resilient means urging said members apart, and tie means for forcibly moving said members toward each other.

References Cited by the Examiner UNITED STATES PATENTS 1,788,652 1/1931 Andrew et al 269160 1,961,516 6/1934 Hansen 13.05 2,038,949 4/ 1936 Mintz 9013.05 3,006,255 10/ 1961 Horwitz 9013.05

WILLIAM W. DYER, JR., Primary Examiner.

G. A. DOST, Assistant Examiner. 

1. IN A KEY-DUPLICATING MACHINE; THE COMBINATION COMPRISING A FRAME HAVING AN OPEN FRONT, A SHAFT CARRIED BY SAID FRAME INTERIORLY THEREOF AND MOUNTED FOR ROTATION ABOUT A GENERALLY HORIZONTAL AXIS, A CUTTING TOOL IN SAID FRAME AND CARRIED BY SAID SHAFT FOR ROTATION THEREWITH, WAY MEANS ON SAID FRAME EXTENDING LONGITUDINALLY OF AND SPACED FROM SAID SHAFT AXIS, A CARRIAGE MOUNTED ON SAID WAY MEANS FOR MOVEMENT LONGITUDINALLY THEREALONG AND SWINGING MOVEMENT TOWARD AND AWAY FROM SAID SHAFT AXIS, A GUIDE MOUNTED IN SAID FRAME SPACED LONGITUDINALLY THEREOF FROM SAID TOOL, AND CLAMP MEANS CARRIED BY SAID CARRIAGE FOR RELEASABLY CLAMPING A CUT KEY ADJACENT TO SAID GUIDE AND A KEY BLANK ADJACENT TO SAID TOOL, SAID CLAMP MEANS BEING SWINGABLE AND SLIDABLE WITH SAID CARRIAGE TO MOVE A CUT KEY ALONG SAID GUIDE AND A KEY BLANK ALONG SAID TOOL TO BE CUT BY THE LATTER, SAID FRAME COMPRISING AN INTEGRAL SHEET OF STIFF BENDABLE MATERIAL CUT AND BENT TO DEFINE AN UPSTANDING REAR WALL, END WALLS INTEGRAL WITH SAID REAR WALL EXTENDING FORWARDLY FROM OPPOSITE ENDS OF SAID REAR WALL TO VERTICALLY REGIDIFY THE LATTER, AND A HOOD INTEGRAL WITH SAID REAR WALL EXTENDING FORWARDLY FROM SAID REAR WALL AND ARCUATELY OVER THE SPACE BETWEEN SAID END WALLS TO HORIZONTALLY RIGIDIFY SAID REAR WALL, SAID WAY MEANS EXTENDING BETWEEN THE FORWARD ENDS OF SAID END WALLS TO RIGIDIFY SAID END WALLS, SAID CARRIAGE COMPRISING AN INTEGRAL SHEET TO STIFF BENDABLE MATERIAL CUT AND BENT TO DEFINE A GENERALLY FLAT BODY PART EXTENDING TRAVERSELY FROM SAID WAY MEANS, SAID BODY PART BEING PROVIDED WITH A BEND EXTENDING GENERALLY PARALLEL TO SAID WAY MEANS FOR LONGITUDINALLY RIGIDIFYING SAID BODY PART, AND A PAIR OF EARS INTEGRALLY DEPENDING FROM OPPOSITE ENDS OF SAID BODY PART SLIDABLY AND ROTATABLY ENGAGING SAID WAY MEANS TO MOUNT SAID BODY PART FOR SLIDING AND ROTATIVE MOVEMENT RELATIVE TO SAID WAY MEANS, SAID CLAMP MEANS COMPRISING A PAIR OF SUBSTANTIALLY IDENTICAL VISES MOUNTED ON SAID BODY PART RESPECTIVELY LOCATED FOR SWINGING MOVEMENT TOWARD AND AWAY FROM SAID GUIDE AND TOOL, SAID VISES EACH COMPRISING A LOWER MEMBER ON AND IN INTERFITTING ENGAGEMENT WITH SAID BODY PART, AN UPPER MEMBER ON SAID LOWER MEMBER, RESILIENT MEANS URGING SAID MEMBERS APART, AND TIE MEANS FOR FORCIBLY MOVING SAID MEMBERS TOWARD EACH OTHER, SAID UPPER AND LOWER MEMBERS HAVING MEETING SUFACES, AT LEAST ONE OF SAID SURFACES BEING OBLIQUE TO THE DIRECTION OF MEMBER MOVEMENT TOWARD AND AWAY FROM EACH OTHER TO SIMULTANEOUSLY MOVE SAID UPPER MEMBER TOWARD SAID LOWER MEMBER AND AWAY FROM SAID SHAFT AXIS, TO THEREBY DRAW A CLAMPED ARTICLE AWAY FROM SAID AXIS, SAID LOWER AND UPPER MEMBERS EACH BEING FORMED WITH AT LEAST A SINGLE PROTRUSION AND A SINGLE RECESS FOR RECEIVING THE PROTRUSION OF THE ADJACEMT MEMBER, SAID RECESSES AND PROTRUSIONS BEING FORMED WITH SAID MEETING SURFACES. 